Your questions are very involved. I will address a few, and maybe others will jump in.
#6. The default is that users can modify their posts within 30 minutes. After 30 minutes, this is what Moodle emails to everyone.
#7. Users can control their own forum notifications.
#6. The default is that users can modify their posts within 30 minutes. After 30 minutes, this is what Moodle emails to everyone.
#7. Users can control their own forum notifications.